The next month. See More Info for format info.
|Format||Optional. Defaults to return a two digit month. See More Info for details.|
Some relevant format options:
%b: Abbreviated name. Jan
%B: Full name. January
%m: Two digits, 01
Check the documentation of the clock command for more information on the alternate formats.
For information regarding exceptions / errors, see here
% # Suppose the current month is December
% NextMonth %B